By submitting your email address, you agree to receive emails regarding relevant topic offers from TechTarget and its partners. You can withdraw your consent at any time. Contact TechTarget at 275 Grove Street, Newton, MA.
Encryption is a way that employs a cryptographic algorithm (procedure) to disguise or hide a message (where a message could be a letter, a document, a whole disk image on a computer -- any string of data). A cryptographic algorithm is a procedure that takes plaintext data (unencrypted, readable) and transforms it into ciphertext (hidden, disguised) in a reversible way. A simple example of an encrypted message:
Gurl unir rlrf gb frr ohg qb abg frr naq rnef gb urne ohg qb abg urne. You can decrypt it (decryption is the opposite of encryption) if I tell you the key: It is a simple letter substitution, where the alphabet is offset by 13 places. A gets replaced by N; B by O; and so on.
Dig Deeper on Email Security Guidelines, Encryption and Appliances
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.